Raycast collision act unpredictable

Question

I currently working on a top-down shooter game. But the shoot collision detection doesn't really work. When I aim at an enemy directly most of the time it doesn't respond, sometimes doesn't even aim directly at the enemy, but it responds, and sometimes it just works fine.

var aimRay_origin = Vector3()
var aimRay_target = Vector3()

onready var aimcast = $player/AimCast
onready var aimtarget = $aimTarget


func _physics_process(delta):


    var mouse_position = get_viewport().get_mouse_position()

    ray_origin = $Camera.project_ray_origin(mouse_position)
    ray_target = ray_origin + $Camera.project_ray_normal(mouse_position) * 2000

    var intersection_cursor = space_state.intersect_ray(ray_origin, ray_target)

    if not intersection.empty():
        aimtarget.global_transform.origin = intersection_cursor.position * 1000

    $player/AimCast.cast_to = aimtarget.global_transform.origin

Answer 1

I quickly put together a test project and there were quite a few undeclared variables / mismatched naming / unreferenced variables in your code. I'm assuming aimTarget is a spatial - not sure why you need this but I've kept it in case there's a use I don't know about.

This works fine for me:

extends Spatial

var ray_origin = Vector3()
var ray_target = Vector3()

onready var aimcast = $Player/AimCast
onready var aimtarget = $aimTarget


func _physics_process(delta):
    var space_state = get_world().direct_space_state
    var mouse_position = get_viewport().get_mouse_position()
    ray_origin = $Camera.project_ray_origin(mouse_position)
    ray_target = ray_origin + $Camera.project_ray_normal(mouse_position) * 2000
    var intersection = space_state.intersect_ray(ray_origin, ray_target)
    if not intersection.empty():
        aimtarget.global_transform.origin = intersection.position * 1000
        $Player/AimCast.cast_to = aimtarget.global_transform.origin

Hope that helps